{"product_id":"carrier-pg9mab048100aasa-pressure-switch-gxu1h7","title":"OEM Carrier Pressure Switch w\/ Bracket -1.81\" WC for PG9MAB048100AASA","description":"\u003ch1\u003eOEM Carrier Pressure Switch w\/ Bracket -1.81\" WC for Model PG9MAB048100AASA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch (part number \u003cstrong\u003eHK06NB124\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PG9MAB048100AASA\u003c\/strong\u003e furnace. The pressure switch monitors negative pressure created by the inducer motor to verify proper venting before allowing the ignition sequence to proceed. When the switch fails or its diaphragm weakens, the furnace will lock out before ignition — commonly triggering an \u003cstrong\u003eerror code 31\u003c\/strong\u003e (pressure switch stuck open) — leaving you with no heat. This part ships with the factory mounting bracket included, matching the original installation footprint exactly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e -1.81\" W.C. (water column) set point | SPST (Single-Pole, Single-Throw) | Normally Open | Factory-matched Honeywell diaphragm assembly | Includes OEM mounting bracket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier part built to exact factory pressure tolerances. Off-brand switches frequently drift from their rated W.C. set point, causing nuisance lockouts or — worse — failing to detect a true venting fault, which is a safety hazard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power and gas before beginning. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, phone camera for reference photos. Note hose port orientation carefully — ports are labeled (+) and (–), and one port contains a flow restrictor that must be matched to the original. Spade terminals are different sizes and are keyed to prevent mis-wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty against defects. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Supersession:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003ePG9MAB048100AASA\u003c\/strong\u003e and over 200 additional Carrier and Bryant residential furnace models. This part supersedes and directly replaces obsolete part numbers \u003cstrong\u003eHK06NB119, HK06NB120, HK06NB122\u003c\/strong\u003e, and \u003cstrong\u003eHK06ZB104\u003c\/strong\u003e. Always verify the W.C. rating on your existing switch's data label before ordering. Not sure it fits? Our HVAC parts team verifies fitment before you order — just ask.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642156405107,"sku":"CARRIE-PG9MAB048100AASA-PRESSURE_SWITCH-HK06NB124","price":106.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642156437875,"sku":"CARRIE-PG9MAB048100AASA-PRESSURE_SWITCH-HK06NB124-GEN","price":93.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06NB124_acd33aa5-5e0c-46a6-b688-ec2bb599de7c.jpg?v=1775038494","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9mab048100aasa-pressure-switch-gxu1h7","provider":"National HVAC Parts","version":"1.0","type":"link"}